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First tentative steps towards adding a Z80 implementation.

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This commit is contained in:
Thomas Harte 2017-05-14 17:46:41 -04:00
parent abeaedf16f
commit b81a2cc273
4 changed files with 91 additions and 2 deletions
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14
OSBindings/Mac/Clock Signal.xcodeproj/project.pbxproj
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@ -68,6 +68,7 @@
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4B69FB461C4D950F00B5F0AA /* libz.tbd in Frameworks */ = {isa = PBXBuildFile; fileRef = 4B69FB451C4D950F00B5F0AA /* libz.tbd */; };
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4B79E4441E3AF38600141F11 /* cassette.png in Resources */ = {isa = PBXBuildFile; fileRef = 4B79E4411E3AF38600141F11 /* cassette.png */; };
4B79E4451E3AF38600141F11 /* floppy35.png in Resources */ = {isa = PBXBuildFile; fileRef = 4B79E4421E3AF38600141F11 /* floppy35.png */; };
@ -544,6 +545,8 @@
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4B6C73BC1D387AE500AFCFCA /* DiskController.hpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.h; path = DiskController.hpp; sourceTree = "<group>"; };
4B77069B1EC904570053B588 /* Z80.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = Z80.cpp; path = Z80/Z80.cpp; sourceTree = "<group>"; };
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@ -1315,6 +1318,15 @@
path = Formats;
sourceTree = "<group>";
};
4B77069E1EC9045B0053B588 /* Z80 */ = {
isa = PBXGroup;
children = (
4B77069B1EC904570053B588 /* Z80.cpp */,
4B77069C1EC904570053B588 /* Z80.hpp */,
);
name = Z80;
sourceTree = "<group>";
};
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isa = PBXGroup;
children = (
@ -1791,6 +1803,7 @@
isa = PBXGroup;
children = (
4B1414561B58879D00E04248 /* 6502 */,
4B77069E1EC9045B0053B588 /* Z80 */,
);
name = Processors;
path = ../../Processors;
@ -2464,6 +2477,7 @@
4BF8295D1D8F048B001BAE39 /* MFM.cpp in Sources */,
4BE77A2E1D84ADFB00BC3827 /* File.cpp in Sources */,
4B5FADBD1DE31D1500AEC565 /* OricMFMDSK.cpp in Sources */,
4B77069D1EC904570053B588 /* Z80.cpp in Sources */,
4BAB62B51D327F7E00DF5BA0 /* G64.cpp in Sources */,
4BD468F71D8DF41D0084958B /* 1770.cpp in Sources */,
4BBF99141C8FBA6F0075DAFB /* TextureBuilder.cpp in Sources */,

4
Processors/6502/CPU6502.hpp
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@ -9,8 +9,8 @@
#ifndef CPU6502_cpp
#define CPU6502_cpp
#include <stdio.h>
#include <stdint.h>
#include <cstdio>
#include <cstdint>
namespace CPU6502 {

9
Processors/Z80/Z80.cpp Normal file
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@ -0,0 +1,9 @@
//
// Z80.cpp
// Clock Signal
//
// Created by Thomas Harte on 14/05/2017.
// Copyright © 2017 Thomas Harte. All rights reserved.
//
#include "Z80.hpp"

66
Processors/Z80/Z80.hpp Normal file
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@ -0,0 +1,66 @@
//
// Z80.hpp
// Clock Signal
//
// Created by Thomas Harte on 14/05/2017.
// Copyright © 2017 Thomas Harte. All rights reserved.
//
#ifndef Z80_hpp
#define Z80_hpp
#include <cstdint>
namespace Z80 {
/*
The list of registers that can be accessed via @c set_value_of_register and @c set_value_of_register.
*/
enum Register {
ProgramCounter,
StackPointer,
A, Flags, AF,
B, C, BC,
D, E, DE,
H, L, HL,
ADash, FlagsDash, AFDash,
BDash, CDash, BCDash,
DDash, EDash, DEDash,
HDash, LDash, HLDash,
IXh, IXl, IX,
IYh, IYl, IY,
R, I,
};
/*
Flags as defined on the Z80; can be used to decode the result of @c get_flags or to form a value for @c set_flags.
*/
enum Flag: uint8_t {
Sign = 0x80,
Zero = 0x40,
Bit5 = 0x20,
HalfCarry = 0x10,
Bit3 = 0x08,
Parity = 0x04,
Overflow = 0x04,
Subtract = 0x02,
Carry = 0x01
};
/*!
Subclasses will be given the task of performing bus operations, allowing them to provide whatever interface they like
between a Z80 and the rest of the system. @c BusOperation lists the types of bus operation that may be requested.
@c None is reserved for internal use. It will never be requested from a subclass. It is safe always to use the
isReadOperation macro to make a binary choice between reading and writing.
*/
enum BusOperation {
Read, ReadOpcode, Write, Input, Output, Interrupt, BusRequest, None
};
}
#endif /* Z80_hpp */